12
6 Installation Details
6.1 Wrench torque sheet for installation
Outside diameter
Torque
Additional tightening
torque
Ф6.35mm
1/4in
1500N.cm(153kgf.cm)
1600N.cm(163kgf.cm)
Ф9.52mm
3/8in
2500N.cm(255kgf.cm)
2600N.cm(265kgf.cm)
Ф12.7mm
1/2in
3500N.cm(357kgf.cm)
3600N.cm(367kgf.cm)
6.2 Connecting the cables
The power cord should be selected according
to the following specifications sheet.
Appliance Amps
AWG Wire Size
10
18
13
16
18
14
25
12
30
10
The cable size and the current of the fuse or
switch are determined by the maximum
current indicated on the nameplate which
located on the side panel of the unit. Please
refer to the nameplate before selecting the
cable, fuse and switch.
6.3 Pipe length and the elevation
Models
Pipe size
Gas
Liquid
WYC009AMFI20
3/8in
(Ф9.52mm)
1/4in
(Ф6.35mm)
WYC012AMFI20
1/2in
(Ф12.7mm)
1/4in
(Ф6.35mm)
Models
Standa
rd
length
Max.
Elevation
Max.
Length
A
Additional
refrigerant
WYC009AMFI20
7.5m
(24.6ft)
10m
(32.8ft)
25m
(82.0ft)
15g/m
(0.16oz/ft)
WYC012AMFI20
7.5m
(24.6ft)
10m
(32.8ft)
25m
(82.0ft)
15g/m
(0.16oz/ft)
6.4 Installation for the first time
Air and moisture in the refrigerant system have
undesirable effects as below:
●
Pressure in the system rises.
●
Operating current rises.
●
Cooling or heating efficiency drops.
●
Moisture in the refrigerant circuit may
freeze and block capillary tubing.
●
Water when mixed with the refrigerant and
oil will create an acid that will damage the
motor windings and components in the
refrigerant system.
Therefore, the indoor units and the pipes
between indoor and outdoor units must be leak
tested and evacuated to remove gas and
moisture from the system.
Gas leak check (Soap water method):
Apply soap water or a liquid neutral
detergent on the indoor unit connections or
outdoor unit Connections with a soft brush to
check for leakage of the connecting points of
the piping. If bubbles come out, the pipes have
leakage.
1. Air purging with vacuum pump
1) Completely tighten the flare nuts of the
indoor and outdoor units, confirm that both
the 2-way and 3-way valves are set to the
Содержание WYC009AMFI20
Страница 7: ...5 2 2 Part names of Indoor Outdoor units ...
Страница 9: ...7 L mm R mm H mm Dimension of installation hole mm 100 mm 3 9in 95 mm 3 7in 45 mm 1 8in 65 mm 2 6in ...
Страница 13: ...11 5 Printed Circuit Board Connector Wiring Diagram of Outdoor unit ...
Страница 34: ...32 9 3 3 Zero crossing detection error diagnosis and solution E2 ...
Страница 42: ...40 P W N U ...
Страница 43: ...41 N V N W ...